photovoltaic cell 1

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I need PowerPoint for these questions down:

[4] What is the recombination process? Explain by showing band diagram and 2D Silicon crystal with covalently bonded atoms (before and after recombination) . Mention different types of recombinations

https://pveducation.org/pvcdrom/pn-junctions/types…

  1. What is radiative recombination? Show by demonstrating it in a band diagram
  2. What is Auger recombination? Show by demonstrating it in a band diagram
  3. What is Shockley -Read -Hall recombination? Show by demonstrating it in a band diagram
  4. Which recombination is dominant in heavily doped semiconductor

[5] What is carrier lifetime?What factors affect carrier lifetime?

(a)Describe the equation for calculating lifetime of charge carrier in bulk. Also describe the equation of lifetime associated with Auger recombination process.

(b) How can you maximize carrier lifetime? Suggest 5 schemes?

(b) if the concentration of donors is increased by a factor of 3, then what will happen the bulk lifetime?

(c) How does lifetime may impact solar cell performance? Describe in your language.